Ecological Archives E096-169-A1

Max C. N. Castorani and Kevin A. Hovel. 2015. Invasive prey indirectly increase predation on their native competitors. Ecology 96:16211632. http://dx.doi.org/10.1890/14-1538.1

Appendix A. Summary of nonlinear model comparisons in Experiment 1 relating the density of Arcuatula to the density and size of native bivalve recruits.

Table A1. Summary of nonlinear model comparisons in Experiment 1 relating the density of Arcuatula (x)to the density and size of native bivalve recruits (y). The number of model parameters are denoted by k. Relative model parsimony is indicated by delta-AICC values (Δi), Akaike weights (wi), and evidence ratios (wmax/wi). For each response variable, best model is designated by bold information criteria.

Native bivalve species and model structure

 

k

Δi

wi

(wmax/wi)

Leukoma staminea density

 

 

 

 

 

 

y = 169 + 0.199x – (3.12 × 10–5)x²

 

3

3.25

0.16

5.25

 

y = 436/[1 + e –0.00311(x – 283)]

 

3

0

0.84

1

Tresus nuttallii density

 

 

 

 

 

 

y = 262e –0.000228x

 

2

0

0.73

1

 

y = 79.1 + 190e –0.000439x

 

3

2.01

0.27

2.73

Tresus nuttallii size

 

 

 

 

 

 

y = 13.8e –0.00136x

 

2

5.88

0.05

18.9

 

y = 8.51 + 6.49e –0.00102x

 

3

0

0.95

1


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